Are lambda functions faster than delegates/anonymous functions?

Question

I assumed lambda functions, delegates and anonymous functions with the same body would have the same \"speed\", however, running the follo

Answer 1

Other peoples results suggest that the performance is the same:

http://blogs.microsoft.co.il/blogs/alex_golesh/archive/2007/12/11/anonymous-delegates-vs-lambda-expressions-vs-function-calls-performance.aspx

As noted in the comments, micro-benchmarks are often misleading. There are too many factors over which you have no control, JIT optimisation, garbage collection cycles, etc ...

See this related question:

When not to use lambda expressions

Finally, I think your test is fundamentally flawed! You use a Linq Where extension method to execute your code. However, Linq uses lazy-evaluation, your code will only be executed if you start iterating over the results!